Central European Functional Programming School 6th Summer School, CEFP 2015, Budapest, Hungary, July 6-10, 2015, Revised Selected Papers - Zsók, Viktória; Zsók, Viktória; Porkoláb, Zoltán; Porkoláb, Zoltán; Horváth, Zoltán; Horváth, Zoltán (Springer International Publishing : Imprint: Springer, 2019)